def_bubble_sort(nums):
    swapped = True
    while swapped:
        swapped = False
        for i in range(len(nums - 1)):
            if nums[i] > nums [i + 1]:
                nums[i], nums [i+1] = nums[i + 1], nums[i]
                swapped = True
def read2list(filename):
    file = open(filename , "r")
    data = file.readlines()
    return data
